Improvement in automatic boiler-feeders



tlni'tml tantl JOHN HYOLT'Z,OFl BALTIMORE, MARYLAND.

Leners Patent No. 88,168, daad March 23,1869.

Tb all whom it may concern Be it known that I, JOHN HoL'rzfof Baltimore, State of Maryland, have invented a new and useful Device for Economizing the Steam and Water of Boilers of Steam-Engines; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

In thedrawiugs-- Figure I is'a side sectional view, and

Figure II, an end sectional view of my device.

The nature of my invention consists in providing the escape-pipes of steam-boilers with a device by which, while the escape of steam is regulated, a large portion of it is returned condensed to the boiler, to become steam again.

In construction, I form my invention as follows:

In or on the escape-pipe A, of theboiler, is screwed permitting the steam to flow unobstructed to its head b, (a plug tightly screwed in,) upon the pipe B and at or near its junction with the escape-pipe A, is screwed a cylinder-head, a-,to which is attached, by a coupling, c, a tube, C, of the same size, the tube G being as much larger than the inner tube B as is required, and extending its full length.

To the end of this tube is attached, by means of couplings d and e, the pipe f, through which the partially-condensed steam nally escapes to the air.

Through the tube B, at a proper distance from its end, b, is an aperture, D, much smaller in diameter than the bore of tube B, andfwhich may be bevelled, if it is necessary. to form a tighter valve-seat.

Fitting into this is the valve-head g, of the screwvalve G, which is let through the outer pipe C, and which forms a shoulder for it, so that it may be screwed to completely close the aperture D, or unscrewcd so as to offer no obstruction to the ilow of the steam.

Upon thescrew G, outside of the tube O, I place a nut, h, to act as a gauge to regulate the depth to which it is desirable to screw the valve, and also to act as an additional shoulder to steady the valve when screwed into its seat.

-Nearly opposite the aperture D, I place a minute opening in thevpipe B, so that when the hole D is entirely closed, there will be escape of steam enough to give warning if the steam from a safety-valve is blowing oli".

The operation of this device is as follows:

The steam coming i'rom the boiler, passes through the pipe B, until, coming in contactwith the head of the pipe, at t, it is forced through the aperture D, which, being smaller ,than the interior of the pipe B, causee the escaping column of steam to receive an increased degree of momentum proportionate to the difference of sizes in the respective diameters of tube B and opening D. This column of steam, with its great momentum, coming in contact with -the valve-head, is, a large part of it, condensed at once, and percussed back to the boiler as water, thus saving a large amount of water ready at once to be converted into steam again, and tending to prevent the steam already in the boiler from being super-heated, by insuring a supply of water to the boiler at diierent parts of it.

I do not confine myself to claiming the exact arrangementpof the parts as shown, as they may be differently modied without affecting the illustration of the principle.

Now, having described my invention,

What I claim as new, andl desire to secure by Letters Patent, is-

A device for percussing water of condensed steam to the boiler, substantially as shown and described.

- yJOHN HOLTZ.

Witnesses:

F. RIEMAN, WILLIAM SUMMERS. 

